-Three characters, "Nue Houju" "Komachi Onozuka," and "Ekisha," were added.
-Character balance was adjusted.
-Fixed and added some stages.
-Some bugs were fixed.
-Proficiency levels for each character have been implemented.
-System adjustments have been made.

Detailed information can be found here, but since it is in Japanese, please use a translation tool or the like.
http://mizusoba.blog.fc2.com/blog-entry-1126.html